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webscraping-ai

WebScraping-AI MCP Server

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webscraping_ai_selected

Extract content from web pages using CSS selectors. Supports JavaScript execution, proxy types, and device emulation for flexible scraping.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
jsNoExecute on-page JavaScript using a headless browser (false by default).
urlYesURL of the target page.
proxyNoType of proxy: datacenter, residential, or stealth (datacenter by default). Use residential if the site restricts datacenter traffic, or stealth for the most heavily protected sites with advanced anti-bot detection. Residential and stealth requests cost more than datacenter — see the pricing page.datacenter
deviceNoType of device emulation.
formatNoResponse format (json or text).json
countryNoCountry of the proxy to use (US by default).
timeoutNoMaximum web page retrieval time in ms (20000 by default, maximum is 30000).
selectorYesCSS selector to extract content for.
wait_forNoCSS selector to wait for before returning the page content.
js_scriptNoCustom JavaScript code to execute on the target page.
js_timeoutNoMaximum JavaScript rendering time in ms (3000 by default).
custom_proxyNoYour own proxy URL in "http://user:password@host:port" format.
error_on_404NoReturn error on 404 HTTP status on the target page (false by default).
error_on_redirectNoReturn error on redirect on the target page (false by default).
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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